Intaglio-printing plate.



H. A. W. WOOD.

INTAGLIO PRINTING PLATE.

APPLICATION FILED MAY 18, 1906.

Patented Jan. 19, 19.15.

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Wee wood use s'ra'rn ATE HENRY A; WISE WOOD, OF NEW YORK, N. Y., ASSIGNOB TO WOOD & NATHAN COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEVT YORK.

INTAGLIO-PR-INTING PLATE.

Specification of Letters Patent.

To all whom it may concern:

Be it known that I, HENRY A. WISE 001), a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented a new and useful Intaglio-Printing Plate, of which the following is a specification.

'My invention relates to improvements in intaglio printing, the particular objects thereof being to provide means whereby intaglio printing plates can be employed in the place of or in connection with, the re lief printing plates or surfaces now in common use and to avoid certain complications which have heretofore been thought to be of such nature as to render such use of intaglio plates impracticable.

In the use of intaglio plates, the papercontacting portion which contains the design and the non-printing portions have heretofore been one and the same surface, all located upon the same plane. The design is filled with ink and all surplus ink is removed from the plate by some wiping or scraping means. It is therefore obviously of the utmost importance that the non-printing surface of the plate be free from ink before the printing operation is performed. This renders it necessary to keep the non-printing portion of the plate entirely free from scratches and other indentions which would fill with ink and print marks in the surface which should be clear. The use of a very high quality of copper in the preparation of these plates is therefore necessary and extreme care in their manipulation absolutely essential.

In order to avoid these difliculties, I have produced a plate provided with a nonpressing and non-printing surface depressed below the paper-contacting surface, and provided with means whereby the scraping or wiping device may be gradually guided upon the paper-contacting surface in such a manner as to effectively clean the latter.

Reference is to be had to the accompanying drawings which constitute a part of this specification and in which,

Figure 1 is a plan of a curved intaglio printing plate mounted on a cylinder and embodying the principles of my invention. Fig. 2 is an end view of the same. Fig. 3 is a plan of a small plate or independent block mounted on a curved backing-plate.

Fig. 4 is an end elevation of the same. i Fig; 5 is a plan of a small flat plate or inde pendent block showing a slight modification, and Fig. 6 is an end elevation of the which matter to be printed, as for example a picture, appears in intaglio, the surface Patented Jan.19,19515.

being of such a form as to be'capable of if:

generation by the motion of a right line, and surrounded or bounded on one or more sides by a non-pressing surface I) in a lfower plane than the paper contacting surace.

In order to carryout the invention successfully, the edges of the design or printing surface preferably rise gradually out of the non-printing surface. Therefore, a slanting continuous surface 0 is shown in the drawings. This surface may be curved at its edges and is provided for the purpose of guiding a scraping or cleaning device gradually upon the paper-contacting surface in such a manner that the forward edge of the latter will be thoroughly cleaned and there will be no sudden change of direction of the cleaning means. On the rear side of the plate as it advances, another slanting surface 0 is preferably employed having its upper edge parallel with that of the surface 0 above described to permit the cleaning means to descend from the paper-contacting surface without leaving ink thereon.

In Figs. 1 and 2,, I have shown the printing plate as mounted upon a cylinder or roll; in Figs. 3 and 4 I have shown a block as mounted upon a curved backing-plate; while in the remaining figures, I have shown flat plates embodying the same features and constructed in accordance with the invention.

The papercontacting surface a surrounds the design and extends some distance from it.

The form shown in Figs. 5 and 6 comprises an independent intaglio printing block having a surface not larger in extent than the design which it carries. This plate may be clamped upon the bed of the press in the same manner as the independent printing block shown in Figs. 3 and 4: can be clamped upon a cylinder and is designed to take the place of the independent relief printing blocks now in use. By the use of such independent blocks, the advantages of intaglio printing may be obtained in con nection with certain advantages of relief printing on the same bed or cylinder. This provision of independent blocks is at times desirable as there are often certain parts of a printed page which can be more conveniently printed by relief While other parts may be more clearly and artistically printed by intaglio plates. This is especially the case when ordinary printing occurs on a page with designs or fac-similes of writing and the like, the ordinary printing being produced by relief plates and the designs and fac-similies by intaglio.

As I am aware that the objects of my invention can be accomplished in many ways and many changes ma be made in the forms of the invention described above without departing from the spirit of my invention as set forth in the claim, I do not Wish to be limited to the constructions shown, but

\Vhat I do claim and desire to secure by Letters Patent is An intaglio printing plate having a nonprinting surface, a paper-contacting surface raised above the non-printing surface thereof, and oppositely slanting rectilinear surfaces beyond the front and rear edges of the printing surface having their upper edges parallel for guiding a cleaning blade gradually and uniformly upon the papercontacting surface.

In testimony whereof I have hereunto set my hand, in the presence of two subscribing Witnesses.

H. A. WISE l VOOD. Witnesses ANNIE B. WVALrnRs, MARY E. MOCADDEN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

